494 SUPPLEMENT. 
LEPTOSCHCENUS (to follow the genus Platyonyz, p. 329). 
Leptoschoinus, Schéuherr, Gen. Cure. viii. 1, p. 264 (1844) ; Lacordaire, Gen. Col. vil. p. 237. 
Leptoschenus, Gemminger & Harold, Cat. Col. viii. p. 2635. 
This genus is based on a single Tropical-American species, the Mexican habitat of 
which we are now able to confirm, Mr. Wickham having recently sent us specimens 
of it from Cuernavaca. Leptoschenus is closely related to Platyonyx, differing from it 
in the non-dilated fourth tarsal joint in the male and the greatly elongated, compact 
cylindrical antennal club in that sex. The elytra are broadly and separately rounded at 
the apex (as in Platyonya), leaving the tip of the last dorsal segment exposed ; the eyes 
are very large; and the mandibles (as in Gereus) are almost straight on their inner edge, 
and do not overlap at the tip when closed. ‘Two species here referred to Gereus 
(G. longiclava and G. tenuiclava) have the antennal club of the male formed much as 
in Leptoschenus maculatus, but they are not otherwise nearly related to it. 
1, Leptoschenus maculatus. (Tab. XXIII. figg. 27, 27a, 2; 28, 3.) 
Cylindrocerus maculatus, Boh. in Schénh. Gen. Cure. ii. p. 793 (¢ ¢)'. 
Leptoschoinus maculatus, Schonh. op. cit. viii. 1, p. 265°; Lacord. Gen. Col. vii. p. 238”. 
Leptoschanus maculatus, Gemm. & Harold, Cat. Col. viii. p. 2635 *. 
2. Rostrum strongly arcuate, tapering, slender, smooth and bare from near the base, the antenne inserted 
far behind the middle, with joint 2 of the funiculus nearly as long as 3 and 4 united, the club rather 
more than half the length of the funiculus. 
Hab. Mexico 3, Cuernavaca (Wickham: 2 ).—SoutH America, Cayenne * 4, Brazil 1+. 
‘Two females, differing from Lacordaire’s description in having the second joint of the 
funiculus much shorter than the first. The figure (28) of the antenna, &c., of the male 
is taken from a Brazilian example. 
CATAPASTUS (p. 333). 
2. Catapastus nivescens, sp.n. (ab. XXIII. figg. 29, 29a, 2.) 
Ovate, black, densely clothed with rather large, adpressed, pure white scales—those on the prothorax long and 
transversely arranged, those on the elytra oblong-ovate and closely, biseriately placed along each interstice, 
and those on the under surface broadly oval. Head densely punctate and squamose, the eyes rather 
small; rostrum feebly curved, a little longer than the head and prothorax, gradually thickened towards 
the base, rather slender at the tip, densely punctate, squamose in its basal half, the antenne inserted 
slightly behind the middle. Prothorax strongly transverse, rapidly, arcuately narrowing from the base, 
not constricted in front; densely, rugosely punctate. Scutellum almost bare. Elytra with the sides 
forming an almost continuous oval outline with the prothorax, deeply punctate-striate, the interstices 
rugose. Beneath densely punctate. Prosternum shallowly depressed alcng the middle. Anterior cox 
narrowly separated. Legs short, densely syuamose. 
Length 33, breadth 14 millim. (@.) 
Hab. Mexico, Rio Balsas (Wickham). 
